Abstract: A powder separation apparatus and method are provided so as to be able to accurately separate a raw powder material. This apparatus has a container into which a raw powder material containing a heavy powder and a light powder, and medium particles having a larger particle size than the raw powder material, are supplied; a container shaker for shaking the container; and a gas blower unit for blowing a gas into an interior of a medium particle layer in the container to discharge the light powder with the gas to the outside of the medium particle layer.

Abstract: There is provided a powderizing apparatus and a method capable of powderizing target objects effectively. The powderizing apparatus includes a cylindrical container extending in a horizontal direction, a rotary shaft disposed along the axis of the cylindrical container, a plurality of rods disposed in parallel with respect to the rotary shaft in a position close to an inner wall of the cylindrical container and away from the rotary shaft, rod-fixing members for fixing the rods to the rotary shaft and hammering members provided on the respective rods.

Abstract: A motor driving apparatus and a driving method thereof, and a mobile terminal in which a terminal voltage value of a terminal is detected at a terminal voltage detection unit, and is held in a holding circuit. A difference between the terminal voltage value detected this time and the terminal voltage value detected last time and held in the holding circuit is calculated in a difference circuit, and the calculated difference voltage value is compared with a reference voltage value determining a rated frequency in a comparator. A synchronizing reference voltage value of a reference voltage source is controlled by a control circuit on the basis of each comparison result in the comparators and a frequency of a synchronizing reference signal specified as a basic operation time unit at the time of synchronous driving is corrected so that a stable synchronous operation condition can be obtained before a rotor of a brushless motor steps out from a synchronous operation.

Abstract: A motor driving apparatus and a driving method thereof, and a mobile terminal in which a terminal voltage value of a terminal is detected at a terminal voltage detection unit, and is held in a holding circuit. A difference between the terminal voltage value detected this time and the terminal voltage value detected last time and held in the holding circuit is calculated in a difference circuit, and the calculated difference voltage value is compared with a reference voltage value determining a rated frequency in a comparator. A synchronizing reference voltage value of a reference voltage source is controlled by a control circuit on the basis of each comparison result in the comparators and a frequency of a synchronizing reference signal specified as a basic operation time unit at the time of synchronous driving is corrected so that a stable synchronous operation condition can be obtained before a rotor of a brushless motor steps out from a synchronous operation.

Abstract: In a cold-curing mortar or concrete composition comprising calcareous and siliceous materials as predominant components, 0.3-2.5 wt % based on the calcareous material of a silicone oil having formula (1) is added. R is C3-12 alkyl, R? is C1-4 alkyl, y is such an integer that the number of R is 5-50 mol % of the total number of substituent groups directly attached to silicon atoms in a molecule, z is an integer of 0-5, and 3?x+y+z?30. The set composition is improved in water repellency without incurring a drop of strength.

Abstract: In a cold-curing mortar or concrete composition comprising calcareous and siliceous materials as predominant components, 0.3-2.5 wt % based on the calcareous material of a silicone oil having formula (1) is added. R is C3-12 alkyl, R? is C1-4 alkyl, y is such an integer that the number of R is 5-50 mol % of the total number of substituent groups directly attached to silicon atoms in a molecule, z is an integer of 0-5, and 3?x+y+z?30. The set composition is improved in water repellency without incurring a drop of strength.

Abstract: A brushless motor-driving circuit is disclosed which includes an initializing element setting an initial rotating speed, an oscillating element for generating a frequency corresponding to the initial rotating speed set by the initializing element, a frequency-controlling element for causing the frequency generated by the oscillating element to change from the frequency corresponding to the initial rotating speed to a frequency corresponding to a constant rotating speed, a driving-signal-generating element for generating driving signals having a plurality of phases based on the generated frequency of the oscillating element, and a driving element for driving coils having a plurality of phases based on the driving signals having the plurality of phases generated by the driving-signal-generating element.

Abstract: A brushless motor driving circuit is disclosed which includes an initializing element setting an initial rotating speed, an oscillating element for generating a frequency corresponding to the initial rotating speed set by the initializing element, a frequency controlling element for causing the frequency generated by the oscillating element to change from the frequency corresponding to the initial rotating speed to a frequency corresponding to a constant rotating speed, a driving signal generating element for generating driving signals having a plurality of phases based on the generated frequency of the oscillating element, and a driving element for driving coils having a plurality of phases based on the driving signals having the plurality of phases generated by the driving signal generating element.

Abstract: In a remote control receiving system of an electronic apparatus such as a television receiver, a charger is connected to the output terminal of a sub regulator for driving a load such as a microcomputer by using an AC power source as an energy source, and a charging switch is connected between the load and the charger, and thereby the charging switch is controlled to turn on or off by a comparator on the basis of the charged voltage in the charger.

Abstract: An amplitude of a sawtooth signal of a vertical period of a television signal is controlled. A level discriminating circuit 7 discriminates whether or not the amplitude of the sawtooth signal of the vertical period lies within a level of an almost proper level. There is provided a counter 9 to count a vertical sync signal when the amplitude is out of this level range. An output of the counter 9 is converted into an analog amplitude control signal by a D/A converter 12, thereby making it possible to control the amplitude at a high response speed.

Abstract: A television receiver having a video signal receiving circuit for receiving a video signal, a vertical synchronizing signal and a horizontal synchronizing signal, a signal processing circuit for supplying the video signal to a cathode ray tube, a vertical deflection circuit for supplying a vertical deflection signal to the cathode ray tube in response to the vertical synchronizing signal, a horizontal deflection circuit for supplying a horizontal deflection signal to the cathode ray tube in response to the horizontal synchronizing signal, a frequency detector circuit connected to the video signal receiving circuit for detecting the frequency of the horizontal synchronizing signal and deriving a control signal in response thereto and a control circuit connected between the frequency detector circuit and the horizontal deflection circuit for controlling the latter in response to the control signal from the former.

Abstract: In a multiple scanning type television receiver in which a horizontal frequency of a horizontal deflection circuit and a capacity value of an S-shaping capacitor are both switched by an output signal from a frequency to voltage converter which detects a horizontal frequency of an input signal and converts the same to a voltage changing in response to the frequency, a horizontal deflection circuit of a multiple scanning type television receiver being characterized in that a detector is provided for detecting said switching time point and during a transient period obtained from said detector, the power source of said horizontal deflection circuit is cut off.

Abstract: A high input impedance circuit having a first differential circuit consisting of a pair of NPN transistors and a second differential circuit consisting of a pair of PNP transistors, is disclosed. One input terminal of the first differential circuit is connected to one input terminal of the second differential circuit. The other input terminal of the first differential circuit is connected to the other input terminal of the second differential circuit. A signal is supplied through a capacitor to one input terminal for eliminating a DC component of the signal. A DC biasing circuit for biasing the first and second differential circuits is connected to the other input terminal. First and second current source circuits are connected to the first and second differential circuits respectively.

Abstract: A frequency modulating circuit for modulating a carrier signal by a modulating signal is disclosed which includes a band-pass filter of biquad type having a first integrating circuit and a second integrating circuit, an output of the first integrating circuit being supplied to an input terminal of the second integrating circuit and an output of the second integrating circuit being supplied to an input terminal of the first integrating circuit and a second input terminal of the second integrating circuit, and a limiting amplifier circuit supplied with the output signal of the band-pass filter and the output thereof being positively fed back to the band-pass filter. In this case, the modulating signal is supplied to the first and second integrating circuits such that the center frequency of the band-pass filter is linearly controlled by the modulating signal whereby a frequency modulated signal modulated by the modulating signal is led out of the output terminal of the second integrating circuit.

Abstract: A highly weather-resistant, thermoformable sheeting prepared by mixing from 45 to 70 parts by weight of a rigid thermoplastic resin selected from the group consisting of polyvinyl chlorides and copolymers each of which is composed mostly of a vinyl chloride and a small amount of a monoolefinic monomer copolymerizable with the vinyl chloride, from 20 to 50 parts by weight of a thermoplastic resin obtained by a graft polymerization of from 20 to 40 parts by weight of an ethylene-propylene copolymer rubber or ethylene-propylene-diene terpolymer with from 60 to 80 parts by weight of a vinyl monomer mixture consisting of from 40 to 90 percent by weight of an alkenyl aromatic compound and from 10 to 60 percent by weight of at least one monomer copolymerizable with the alkenyl aromatic compound, and from 5 to 35 parts by weight of an acrylonitrile-butadiene rubber, with from 5 to 50 parts by weight of a plasticizer or plasticizers added to the 100 parts by weight of the resinous mixture.

Abstract: A switching circuit is disclosed in which a first field effect transistor (which will be hereinafter referred to as an FET simply) is provided in such a manner that its source-drain are connected between an input terminal and output terminal and its source and drain electrodes are connected to a bias source through resistors, and a second FET of a source follower type is provided such that its gate electrode is connected to the source electrode of the first FET and its source electrode is connected to the gate electrode of the first FET. In this case, by changing the source electrode voltage level of the second FET, the first FET is made on and off to perform a switching operation.